 # Mini Lessons: Maths

Australian teachers teach important numeracy skills in these ten minute lessons.

## Mini Lessons: Maths - Years 3-6: Subtraction with Regrouping

In this lesson, Miss White teaches you how to complete formal subtraction problems involving regrouping. She will introduce you to a helpful rhyme, which will assist you with solving tricky subtraction questions.

## Mini Lessons: Maths - Years 3-6: Calculating Change using Vertical Subtraction

In this lesson, Miss White teaches you how to complete formal subtraction problems involving regrouping. She will teach you how to regroup multiple times, and help to calculate how much change you would receive while shopping

## Mini Lessons: Maths - Years 3-4: Minute to win it: Quantifying Collections

In this lesson, Ms Kirszman teaches you how to play Minute To Win It, and she explores how we can quantify collections without needing to count but by looking and thinking instead.

## Mini Lessons: Maths - Years 3-4: Our Place Value System

In this lesson, Ms Kirszman demonstrates how to measure using 10 as a unit to iterate, rather than using a smaller unit. You will also explore how renaming, using place value parts, can help you when working with numbers.

## Mini Lessons: Maths - Years 3-4: Find Missing Numbers on a Number Line

In this lesson, Ms Kirszman tells you about a very robust and interesting debate that took place with her class when the students needed to find some missing information on a number line.